Your going to the right place if you'e waiting for a Mayo neurology appointment! I have ventriculomegaly written on my EHR, scared me too, but a shunt was not recommended. They'll give you a thorough workup and make their recommendations at your appointment. I was told that I had to have dementia before qualifying for a shunt procedure. I really don't want a shunt! I found a 60 Minutes YouTube video about NPH, fairly old, describing a couple patients getting a shunt and being misdiagnosed with Alzheimers. Maybe watch that and see what kind of condition a patient has to be in to get a shunt with a good outcome? Helped me understand what mayo was trying to explain to me. Good luck at your appointment!